"PORT-AU-PRINCE, Haiti -- For nearly 10 months, more than 1 million people in Haiti's earthquake camps have been walking a precarious line: Trying to get out and find good homes without losing their tents and the possessions they still have.

Now a potential hurricane threatens to upend that careful balance. The Haitian government has called for the voluntary evacuation of all the quake zone's camps ahead of Friday's expected arrival of Tropical Storm Tomas, telling residents to find somewhere else to go."